package ooday01;
/** 学生类 */
public class Student {
    //成员变量
    String name;
    int age;
    String className;
    String stuId;//String 默认值为 null

    //构造方法
    Student(){
    }
    Student(String name,int age){
        this.name = name;
        this.age = age;
    }
    Student(String name,int age,String className,String stuId){
        this.name = name;
        this.age = age;
        this.className = className;
        this.stuId = stuId;
    }
    //方法
    void study(){
        System.out.println(this.name+"在学习...");
    }
    void sayHi(){
        System.out.println("大家好，我叫"+this.name+"，今年"+this.age+"岁了，所在班"+
                this.className+"，学号为:"+this.stuId);
    }
    void playWith(String anotherName){
        System.out.println(this.name+"正在和"+anotherName+"一起玩...");
    }
}